directshow强连自己的filter

以播放一个以h264编码，声音以AAC编码的mp4文件为例

可以在graphEdit中看到coreAVC video decoder的guid值 09571A4B-F1FE-4C60-9760-DE6D310C7C31

//09571A4B-F1FE-4C60-9760-DE6D310C7C31 如果是自己写的filter，肯定有GUID值，这是如果连接uuids.h中

//没有的CLSID，要自己重新定义一下 ,

static const GUID CLSID_coreAVC =

{ 0x09571A4B, 0xF1FE, 0x4C60, { 0x97, 0x60, 0xDE, 0x6D, 0x31, 0x0C, 0x7C, 0x31 } };

下面是完整的播放一个mp4文件（视频以h264编码，声音以AAC编码）的代码

play()

{

CoInitialize(NULL);

IGraphBuilder *pGraph = NULL;

IMediaControl *pControl = NULL;

IMediaEvent *pEvent = NULL;

HRESULT hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,

IID_IGraphBuilder, (void **)&pGraph);

if (FAILED(hr))

{

printf("ERROR - Could not create the Filter Graph Manager.");

return;

}

hr = pGraph->QueryInterface(IID_IMediaControl, (void **)&pControl);

hr = pGraph->QueryInterface(IID_IMediaEvent, (void **)&pEvent);

// Build the graph. IMPORTANT: Change this string to a file on your system.

hr = pGraph->RenderFile(L"D://test_my.mp4", NULL);

IBaseFilter *spliteFilter;

hr=FindSplitterFilter(pGraph,&spliteFilter); //寻找分离器

NukeDownstream(pGraph,spliteFilter); //删除分离器以下的所有filter

IBaseFilter*pDecode,*pDisplay;

//能过CLSID加入视频显示的filter 如果是自己写的filter，替换成自己filter的CLSID即可

hr=AddFilterByCLSID(pGraph,CLSID_VideoRendererDefault,L"video Render",&pDisplay);

//能过CLSID加入coreAVC

hr=AddFilterByCLSID(pGraph,CLSID_coreAVC,L"core AVC",&pDecode);

IPin*pPin0=0;

IPin*pPin1=0;

if (spliteFilter)

{

hr=GetPin(spliteFilter,PINDIR_OUTPUT,0,&pPin0);

hr=GetPin(spliteFilter,PINDIR_OUTPUT,1,&pPin1);

}

if (pPin1)

{

hr=pGraph->Render(pPin0);

hr=pGraph->Render(pPin1);

pPin0->Release();

pPin1->Release();

}

pDecode->Release();

pDisplay->Release();

SaveGraphFile(pGraph,L"D://abc.grf"); //方便调试，看是否连接成功

//播放

if (SUCCEEDED(hr))

{

// Run the graph.

hr = pControl->Run();

if (SUCCEEDED(hr))

{

long evCode;

pEvent->WaitForCompletion(INFINITE, &evCode);

// Note: Do not use INFINITE in a real application, because it

}

pControl->Release();

pEvent->Release();

pGraph->Release();

CoUninitialize();

}

HRESULT FindSplitterFilter(IGraphBuilder *pGraph,IBaseFilter **pSplitterFilter)

{

IEnumFilters *pEnumFilter=NULL;

HRESULT hr=pGraph->EnumFilters(&pEnumFilter);

if (SUCCEEDED(hr))

{

IBaseFilter *pFilter=NULL;

while (S_OK==pEnumFilter->Next(1,&pFilter,NULL))

{

int iOutPinCount=0;

// IPin *ppPin = 0;

IEnumPins *pEnumPin = 0;

IPin *pPin = 0;

hr = pFilter->EnumPins(&pEnumPin);

if (FAILED(hr))

{

return hr;

}

while (pEnumPin->Next(1, &pPin, NULL) == S_OK)

{

PIN_DIRECTION ThisPinDir;

pPin->QueryDirection(&ThisPinDir);

if (ThisPinDir == PINDIR_OUTPUT)

{

iOutPinCount++;

}

pPin->Release();

}

pEnumPin->Release();

if(iOutPinCount>=2)

{

*pSplitterFilter=pFilter;

return S_OK;

}

pEnumFilter->Release();

}

return E_FAIL;

}

void NukeDownstream(IGraphBuilder * inGraph, IBaseFilter * inFilter)

{

if (inGraph && inFilter)

{

IEnumPins * pinEnum = 0;

if (SUCCEEDED(inFilter->EnumPins(&pinEnum)))

{

pinEnum->Reset();

IPin * pin = 0;

ULONG cFetched = 0;

bool pass = true;

while (pass && SUCCEEDED(pinEnum->Next(1, &pin, &cFetched)))

{

if (pin && cFetched)

{

IPin * connectedPin = 0;

pin->ConnectedTo(&connectedPin);

if(connectedPin)

{

PIN_INFO pininfo;

if (SUCCEEDED(connectedPin->QueryPinInfo(&pininfo)))

{

if(pininfo.dir == PINDIR_INPUT)

{

NukeDownstream(inGraph, pininfo.pFilter);

inGraph->Disconnect(connectedPin);

inGraph->Disconnect(pin);

inGraph->RemoveFilter(pininfo.pFilter);

}

pininfo.pFilter->Release();

}

connectedPin->Release();

}

pin->Release();

}

else

{

pass = false;

}

pinEnum->Release();

}

HRESULT AddFilterByCLSID(IGraphBuilder*pGraph,const GUID& clsid,LPCWSTR wszName,IBaseFilter**ppF)

{

if (!pGraph||!ppF)

return E_POINTER;

*ppF=0;

IBaseFilter*pF=0;

HRESULT hr=CoCreateInstance(clsid,0,CLSCTX_INPROC_SERVER,IID_IBaseFilter,reinterpret_cast<void**>(&pF));

if (SUCCEEDED(hr))

{

hr=pGraph->AddFilter(pF,wszName);

if (SUCCEEDED(hr))

*ppF=pF;

else

pF->Release();

}

return hr;

}

HRESULT SaveGraphFile(IGraphBuilder *pGraph, WCHAR *wszPath)

{

const WCHAR wszStreamName[] = L"ActiveMovieGraph";

HRESULT hr;

IStorage *pStorage = NULL;

hr = StgCreateDocfile(

wszPath,

STGM_CREATE | STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE,

0, &pStorage);

if(FAILED(hr))

{

return hr;

}

IStream *pStream;

hr = pStorage->CreateStream(

wszStreamName,

STGM_WRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE,

0, 0, &pStream);

if (FAILED(hr))

{

pStorage->Release();

return hr;

}

IPersistStream *pPersist = NULL;

pGraph->QueryInterface(IID_IPersistStream, (void**)&pPersist);

hr = pPersist->Save(pStream, TRUE);

pStream->Release();

pPersist->Release();

if (SUCCEEDED(hr))

{

hr = pStorage->Commit(STGC_DEFAULT);

}

pStorage->Release();

return hr;

}

Harries.bai

http://www.paipaitxt.com/u.php?a=info&uid=56587091
http://www.paipaitxt.com/u.php?a=info&uid=56587131
http://www.paipaitxt.com/u.php?a=info&uid=56587183
http://www.paipaitxt.com/u.php?a=info&uid=56587197
http://www.paipaitxt.com/u.php?a=info&uid=56587215
http://www.paipaitxt.com/u.php?a=info&uid=56611555
http://www.paipaitxt.com/u.php?a=info&uid=56611591
http://www.paipaitxt.com/u.php?a=info&uid=56611599
http://www.paipaitxt.com/u.php?a=info&uid=56611613
http://www.paipaitxt.com/u.php?a=info&uid=56611645
http://www.paipaitxt.com/u.php?a=info&uid=56611645
http://www.paipaitxt.com/u.php?a=info&uid=56611665
http://www.paipaitxt.com/u.php?a=info&uid=56611687
http://www.paipaitxt.com/u.php?a=info&uid=56611717
http://www.paipaitxt.com/u.php?a=info&uid=56611737
http://www.paipaitxt.com/u.php?a=info&uid=56611761
http://www.paipaitxt.com/u.php?a=info&uid=56611779
http://www.paipaitxt.com/u.php?a=info&uid=56611789

directshow强连自己的filter相关推荐

最简单的基于DirectShow的示例：获取Filter信息
===================================================== 最简单的基于DirectShow的示例文章列表: 最简单的基于DirectShow的示例:视 ...
c++ DirectShow播放任意格式的视频
利用opencv只能处理.avi的视频,opencv之前的版本之前试过好像是只能处理.avi未压缩版本的视频,未压缩过的视频相当大,一个文件大概是几十个G.(这个不确定,因为之前用的压缩过的.avi的 ...
DirectShow开发快速入门之慨述
DirectShow是微软公司提供的一套在Windows平台上进行流媒体处理的开发包,与DirectX开发包一起发布.那么,DirectShow能够做些什么呢?且看,DirectShow为多媒体流的捕 ...
javascript学习系列(2):数组中的filter方法
最好的种树是十年前,其次是现在.歌谣每天一个前端小知识提醒你改好好学习了知乎博主 csdn博主 b站博主放弃很容易但是坚持一定很酷我是歌谣喜欢就一键三连咯你得点赞是对歌谣最大的 ...
DirectShow系统初级指南
流媒体的处理,以其复杂性和技术性,一向广受工业界的关注.特别伴随着因特网的普及,流媒体在网络上的广泛应用,怎样使流媒体的处理变得简单而富有成效逐渐成为了焦点问题.选择一种合适的应用方案,事半功倍.此时 ...
最简单的基于DirectShow的示例：视频播放器自定义版
===================================================== 最简单的基于DirectShow的示例文章列表: 最简单的基于DirectShow的示例:视 ...
最简单的基于DirectShow的示例：视频播放器图形界面版
===================================================== 最简单的基于DirectShow的示例文章列表: 最简单的基于DirectShow的示例:视 ...
DirectShow之视频处理
视频处理技术是一个很大的范畴,包括了视频技术的很多方面.在软件中,主要实现了视频文件的分割,视频文件的合成,视频的格式转换,图像序列合成视频,视频的一些特效处理. 视频处理系统结构在软件上,本系统的 ...
directshow(directShow多个usb摄像头方案)
DirectShow评价是什么? DirectShow评价编辑播放一个文件是一项相对简单的任务,不过对于像是从视频窗口接收特定窗口信息到创建特定filters,开发者会不断地遇到DirectShowA ...

directshow强连自己的filter

directshow强连自己的filter相关推荐

最新文章

热门文章